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# What's new in Sigma

> Sigma release notes for Dec 20, 2024: Inbound event for changing between supported workbook modes in an embed, recover your own deleted documents.

## Embeds

### Inbound event for changing between supported workbook modes in an embed

Use the `workbook:mode:update` inbound event to change between **Explore** mode and **View** mode in an embed.

For more information, see [Implement inbound and outbound events in embeds](https://help.sigmacomputing.com/docs/inbound-and-outbound-events-in-embeds#workbookmodeupdate).

## Search and discovery

### Recover your own deleted documents

Any user can now recover their own deleted documents without the involvement of an admin.

For more information, see:

* [Recover deleted documents](https://help.sigmacomputing.com/docs/recover-deleted-documents)
* [Recover a deleted workbook](https://help.sigmacomputing.com/docs/edit-draft-and-publish-a-workbook#recover-a-deleted-workbook)
* [Recover a deleted data model](https://help.sigmacomputing.com/docs/create-and-manage-data-models#recover-a-deleted-data-model)
* [Recover a deleted dataset](https://help.sigmacomputing.com/docs/create-models#recover-a-deleted-dataset)

## Workbook features

### Expanded options for actions that set control values

When configuring the [Set control value](https://help.sigmacomputing.com/docs/create-actions-that-manage-control-values#set-a-control-value) action to update a **List values** control, the **Set control selection to** setting allows you to determine whether the action replaces or adds values to the existing control selection. This enhancement brings flexibility to the action in support of list controls that allow multiple value selections.

### Custom digit grouping sizes supported

You can now set custom digit grouping sizes for numerical columns, to accommodate variances between number systems.

For more information, see [Custom number formats](https://help.sigmacomputing.com/docs/data-types-and-formats#custom-number-format).

## Bug fixes

* The [Create a member](/reference/create-member) (`POST /v2/members`) endpoint now returns an error if the email address is not in a valid format.
* Improved data label positioning for bar charts. Bar charts that use a label style of **Auto** see fewer overlapping labels.
* The appearance of KPI charts at smaller sizes is improved.
* Showing or hiding totals on a grouped table now hides the totals row for the entire grouping level, instead of only removing the total value from the row.
* When hiding totals in a pivot table, totals can now be hidden if the pivot values were placed above rows or columns.